Not mentioned here, but likely part of the coming HiFi upgrade are surround sound formats. AirPods Pro are already capable of spatial audio playback, including Dolby Atmos surround sound, which is not just left/right, but front/back and up/down. It puts you in the room. Tidal and Amazon already have this format, but charge extra for it and provide a terrible UI and implementation that makes it really not worth it.
Apple, however, has already put the required hardware in millions of people's pockets for surround formats, and in quite a few homes with Apple TV attached to surround speaker setups. All they have to do is flip the switch to make that content available. And while there will always be debate as to whether most users can tell the difference between AAC and lossless audio when both are two-channel stereo, pretty much anyone would be wowed listening to a properly mixed recording in Dolby Atmos.
Apple, however, has already put the required hardware in millions of people's pockets for surround formats, and in quite a few homes with Apple TV attached to surround speaker setups. All they have to do is flip the switch to make that content available. And while there will always be debate as to whether most users can tell the difference between AAC and lossless audio when both are two-channel stereo, pretty much anyone would be wowed listening to a properly mixed recording in Dolby Atmos.